<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>倒影</title>
    <style>
        div{
            width: 300px;
            height: 100px;
            margin: 300px auto;
            font-size: 100px;
            -webkit-box-reflect: below 30px -webkit-gradient(linear,left top,left bottom,from(rgba(0,0,0,0)),to(rgba(255,255,255,0.5)));
        }
    </style>
</head>
<body>
    <div>你好！</div>
</body>
</html>